aws-xray-sdk-koa2
v3.10.2
Published
AWS X-Ray Middleware for koa (Javascript)
Downloads
24,394
Readme
Requirements
AWS X-Ray SDK Core (aws-xray-sdk-core) Koa 2.x or greater
AWS X-Ray and Koa
The AWS X-Ray Koa package automatically records information for incoming and outgoing requests and responses, via the middleware functions in this package. To configure sampling, dynamic naming, and more see the set up section.
The AWS X-Ray SDK Core has two modes - manual
and automatic
.
Automatic mode uses the cls-hooked
package and automatically
tracks the current segment and subsegment. This is the default mode.
Manual mode requires that you pass around the segment reference.
In automatic mode, you can get the current segment/subsegment at any time: var segment = AWSXRay.getSegment();
In manual mode, you can get the base segment off of the context object: var segment = ctx.segment;
Middleware Usage
The Koa X-Ray SDK provides one middlewares: xrayKoa.openSegment(<name>)
.
This middleware will wrap all of the defined routes that you'd like to trace.
In automatic mode, the openSegment
middleware must be the last middleware added
before defining routes, otherwise issues with the cls-hooked
context may occur.
Automatic mode examples
var AWSXRay = require('aws-xray-sdk-core');
var xrayKoa = require('aws-xray-sdk-koa2');
var app = new Koa();
//...
app.use(xrayKoa.openSegment('defaultName'));
router.get('/myRoute', (ctx) => {
const segment = AWSXRay.getSegment();
//Do whatever
});
Manual mode examples
var AWSXRay = require('aws-xray-sdk-core');
var xrayKoa = require('aws-xray-sdk-koa2');
var app = new Koa();
//...
var AWSXRay = require('aws-xray-sdk');
app.use(xrayKoa.openSegment('defaultName')); //Required at the start of your routes
router.get('/myRoute', (ctx) => {
const segment = ctx.segment;
//Do whatever
});